The book gives you more information and instructions then the television
<span>For an organism having an eight-cell embryo, the cells of the upper tier were aligned over the cells of the lower tier at a very slight angle. Given these conditions, it can be concluded that the organism is likely to be a sea cucumber. The growth of the sea cucumbers starts with the development of the larvae. </span>
A sequence of three nitrogen bases is called a codon, and each codon codes for a specific amino acid. If a base is deleted, as is the case in a mutation called deletion, the order of the nitorgenous bases will be disturbed and the entire protein molecule being coded for will be changed.
Answer:
The correct option is A) RNA polymerase.
Explanation:
RNA polymerase is an essential enzyme complex to carry out transcription, these enzymes are responsible for transcribing DNA into RNA. Using a DNA template, RNA polymerase builds a new RNA molecule through base pairing. This process is the first step of gene expression, and is called transcription. RNA polymerase binds to DNA in a very particular region or sequence, called a promoter.
<span>Chlorofluorocarbons
(CFCs) chemicals contain carbon, chlorine and fluorine and is t so expensive at
the same time it’s not flammable, the reason why it is mainly used in business
such as refrigerators and plastics. However, these chemicals destroys our
stratosphere, the second layer of the Earth’s atmosphere and protects us by
blocking the ultraviolet radiation (UV Light). This type of radiation can seep
through organisms skins and can leave destructive effects on DNA molecules
which will also cause skin cancer.</span>